1. Unboxing and Basic Familiarization with the Equipment

1.1 Key Technical Specifications

LISUN Model	SG61000-5H-SP	SG61000-5H15-SP	SG61000-5H
Turn-On Voltage Waveform	1.2/50 μs ± 20%
Short-Circuit Current Waveform	8/20 μs ± 20%
Output Impedance	2Ω, 12Ω, and 500Ω
Output Voltage Range	0–10 kV ±5%	0–15 kV ±5%	0–10 kV ±5%
Output Current Range	0–5 kA ±5%	0–7.5 kA ±5%	0–5 kA ±5%
Number of surges	1–9999 times
Polarity	Positive Terminal, Negative Terminal, and Fully Automatic
Phase Shift	Asynchronous, Synchronous: 0°–360° or specified angle testing
Special Features	Brand-new free upgrade: Features a built-in Voltage Probe and digital oscilloscope, allowing you to view output waveforms directly on the touchscreen!
Operating Instructions	LCD touchscreen input, built-in Android operating system
Dimensions (W x D x H)	72 × 61 × 175 cm
Gross Weight	About 120 kg	About 150 kg	About 130 kg
Coupling Decoupling Network (Built-in CDN)	AC 240 V/16 A Single-Phase CDN		AC 440 V/32 A Three-Phase CDN
Coupling Decoupling Network for Power Lines (Optional External CDN)	Select based on the maximum surge output voltage and the EUT’s maximum input; for details, see the Shanghai Lishan LISUN CDN61000-5P.
Coupling Decoupling Network for Communication Lines (Optional External CDN)	Options are available based on the type of test object, data transmission rate, and surge output waveform. For details, see the Shanghai LISUN CDN61000-5C.
EUT Isolation Transformer (External, Optional)	LISUN ITEU-SP4K (220V single-phase) or ITUS-SP2K (110V)

1.2 Unboxing and Checking the Contents

1.2.1 Unpacking and Visual Inspection

When unpacking the device, handle it gently to avoid scratching the casing with sharp tools. After unpacking, first inspect the exterior of the device to ensure there are no obvious deformations or dents, and that the buttons are not damaged or loose.

If you notice any damage or deformation to the equipment or accessories, do not turn on the power. Please contact us immediately.

1.2.2 Main Unit and Accessories

Main Equipment: ① SG61000-5 Surge Generator; ② ITEU Series Isolation Transformers, used to power test specimens via lightning surges;③ PD-E01, EUT sample box (see Figure 1), used to prevent sparks from the EUT during testing; furthermore, the PD-E01 sample box automatically disconnects the EUT cables when opened to prevent accidental electric shock.

Figure 1

Note 1: Surge Generators must be used in conjunction with Isolation Transformers to protect the power grid; this manual uses the ITEU series of Isolation Transformers as an example.

Note 2: The PD-E01 sample tray is optional. During testing, samples may be severely damaged by surges or even cause parts to fly off; place the sample in the sample tray to ensure a safe testing environment. The dimensions of the sample tray can be customized to fit the size of the EUT sample.

Standard Accessories: ① Isolation Transformer power cord; ② Isolation Transformer output cable, connecting the Isolation Transformer’s output terminal to the CDN input terminal of the Surge Generator; ③ Ground wire, used to connect to the PGND protective ground terminal; ④ Discharge tube (spare), used to check whether the device is outputting a surge in the event of a malfunction;⑤ Coaxial cable, used to connect to an external oscilloscope for monitoring surge waveforms; ⑥ Surge Generator power cord; ⑦ and ⑧ Test specimen connection cables, connecting the Surge Generator to the EUT (Equipment Under Test).

Figure 2

Download links for the digital user manual, warranty card, and other documents have been sent to you via email. Please download them as soon as possible. If you missed the email, please feel free to contact us to request a new download link.

2. Safety Precautions

2.1 Placement Guidelines

Place the Surge Generator on a level surface; avoid tilting or inverting it, and keep it away from sources of vibration;

Isolation Transformer: Keep it at least 0.5 meters away from the main unit to prevent electromagnetic coupling interference;

The premises must be free of strong electromagnetic interference, corrosive gases, and flammable or explosive materials, and must be well-ventilated;

The distance between the equipment and walls or surrounding structures (such as other testing equipment or shelving) must be at least 1000 mm to facilitate maintenance; at least 2000 mm of space must be left in front of the equipment to ensure smooth operation and keep the surrounding area free of obstructions.

2.2 High-Voltage Safety Standards

2.2.1 Security Check

Verify that the equipment’s power supply voltage matches the mains voltage (AC 220 V ±10%, 50/60 Hz), and ensure that the power supply is properly grounded and that the grounding wire is free of damage or looseness;

Grounding Requirements: The host unit’s protective grounding terminal (PGND) must be connected to ground, with a grounding resistance of ≤4 Ω, to ensure safe discharge of high voltage;

Confirm ambient temperature: 15°C to 35°C, relative humidity: 10% to 75% (non-condensing), atmospheric pressure: 86 kPa to 106 kPa;

Operators must have dry hands and must not wear any metal jewelry.

2.2.2 Safety Requirements for Operational Procedures

The equipment generates high voltages (up to 10 kV to 15 kV) and high-current surges during operation. Under no circumstances should you touch the pulse output connector, the EUT terminals, or the CDN port.

Before switching connections or replacing the EUT, you must first ensure that the high-voltage output is turned off (the HV indicator light is off) and wait at least 5 minutes to ensure that the internal high-voltage capacitors are completely discharged.

Do not eat or drink during the test to prevent accidents caused by electric shock.

When multiple people are involved, clearly define roles and responsibilities, and confirm them with each other before starting the test to avoid errors.

Do not disassemble the equipment or work with the casing open without authorization. The equipment contains high voltage, and repairs by non-professionals may result in electric shock or damage to the equipment.

2.3 Emergency Response Measures

In the event of an electric shock: Immediately shut off the main power supply to the equipment, move the operator to a safe area, administer first aid if necessary, and contact medical personnel.

Equipment Malfunction (Smoke, Unusual Noises, Unusual Odors): Immediately shut down the equipment and disconnect the power supply; disconnect all wiring; do not turn the equipment back on; contact the manufacturer for repairs.

Abnormal surge output: Pause the test, contact the manufacturer for troubleshooting, and do not touch the test port directly with your hands.

2.4 Other

For matters not covered in this manual, please proceed with caution or contact us.

3. Preparations Before the Test

3.1 Equipment Wiring

① Isolation Transformer input terminal: Connect the power cord to the Isolation Transformer; ② and ③ Isolation Transformer output terminals: Depending on the current of the EUT (Equipment Under Test) and the wiring configuration, select one to connect to the surge generator’s built-in CDN input terminal;④ Connect the surge generator’s power cord; ⑤ Built-in CDN input terminal; ⑥ PGND protective ground terminal; ⑦ Built-in CDN output terminal, used to connect the EUT sample.

Figure 3

For safety reasons, the EUT sample may be placed in a sample box.

Note: Before testing, verify that the EUT is in normal operating condition and meets the product’s rated operating conditions.

Next, connect the power cords for the surge protection unit and the Isolation Transformer to an appropriate power source.

Note: The Isolation Transformer is used only to supply power to the EUT via the Surge Generator; the power supply for the Surge Generator itself does not need to be connected to the Isolation Transformer.

3.2 Confirmation of Test Parameters

3.2.1 Selection of Test Level

Based on the EUT installation environment and product standards, select the corresponding test level (the priority levels are listed in the table below); lower levels must meet compatibility requirements:

Test Level	Breakdown Test Voltage (±10%)	Applicable Scenarios
Level 1	0.5 kV	A well-maintained indoor environment
Level 2	1.0 kV	Typical Indoor Environment
Level 3	2.0 kV	Outdoor or semi-outdoor environments
Level 4	4.0 kV	Harsh Outdoor Environments
X-Level	Specific Voltage	Special scenarios specified in product standards

3.3 Equipment Warm-up and Self-Test

Turn on the power switch on the front panel of the host; the device enters standby mode, the power indicator light turns on, and the cooling fan starts up.

Please turn on the protective grounding switch on the back of the surge generator—that is, set it to the “1” position—and ensure that the red indicator light is on.

Figure 4

Wait 5 minutes for the device to warm up, and check that the touchscreen is displaying normally and that there are no error messages.

4. Introduction to the Touchscreen Program

Program Startup Screen: ① Oscilloscope Settings Screen; ② General Usage Precautions (this feature is not yet fully developed; do not perform any operations here at this time); ③ System Information Screen; ④ Chinese/English Language Switch; ⑤ Program Screen; ⑥ Surge Test Screen.

Figure 9

4.1 Oscilloscope Function Settings Interface

Just check all the boxes, and the current surge waveform will be displayed automatically after each surge test.

Figure 10

4.2 Program Interface

Used to create new programs or manage existing ones.

Figure 16

If you need to test the program, simply enter all the parameters you want to test step by step as needed, and then save.

Figure 17

4.3 Surge Test Interface

① Surge voltage and polarity settings; ② Surge interval settings; ③ Surge count settings; ④ Surge coupling direction settings; ⑤ Surge phase angle settings; ⑥ Common-mode impedance selection (default is 12 Ω, 2 Ω optional; no setting required for differential mode, fixed at 2 Ω);⑦ EUT parameter monitoring settings; ⑧ Directly call up a pre-edited program to run a test; ⑨ EUT voltage and current display; ⑩ Click to turn the EUT power on (or off); ⑪ Click to start or stop the surge test.

Figure 11

Note: To automatically display the current surge waveform on the screen, set the surge interval to at least 10 seconds; otherwise, the program will not have enough time to display the surge waveform.

4.3.1 Surge Coupling Direction Settings Interface

You can select a single coupling direction, or click “Auto” to select multiple coupling directions at once.

Figure 12

On the “Automatic Functions” screen, you can select from various combinations of coupling directions, or click “General” to return to selecting a single coupling direction.

Figure 12.1

4.3.2 Surge Angle Settings Interface

You can choose asynchronous, a single surge angle, or click “Auto” to select multiple coupling angles simultaneously.

Figure 13

On the “Auto Function” screen, you can choose from a variety of angle combinations. Tap the button marked in the image below to return.

Figure 14

4.3.3 EUT Parameter Monitoring Settings Interface

① √ indicates that EUT parameters are monitored; × indicates that EUT parameters are not monitored; ② √ indicates that surge peak data is monitored; × indicates that surge peak data is not monitored; ③ √ indicates that the equipment automatically stops the surge test when the EUT voltage or current data exceeds the set limits;④ A check mark (√) indicates that the device automatically stops the surge test when the surge peak voltage or current data exceeds the set limits.

Figure 15

Note 1: Users may choose whether or not to monitor EUT parameters and surge peak data during the test; this does not affect the surge test.

Note 2: If you select option ③ or ④, the surge test may be unexpectedly terminated due to the activation of a protection mechanism. Please choose carefully and set appropriate limits.

5. Surge Testing

5.1 Operating Procedures

After all the parameters in the touchscreen program have been set, turn on the Isolation Transformer. Turn on the circuit breaker for the host’s built-in network CDN.

Figure 18

① Click “EUT Power” to power on the EUT; ② Then click “Start” to begin the test.

Figure 19

If the oscilloscope function is checked, the program interface will display the surge voltage and current waveforms after each surge output:

Figure 20

Note: When the EUT is connected and testing is proceeding normally, the surge voltage and current values and waveforms will be affected. The surge voltage and voltage waveform (1.2/50 μs) specified in the standard must be measured under fully open-circuit conditions; the surge current and current waveform (8/20 μs) specified in the standard must be measured under fully short-circuit conditions.

Open circuit, meaning that no EUT or cables are connected to the CDN output, as shown in the figure below:

Figure 21

For a complete short circuit, the two ends of the surge coupling direction must be short-circuited. For example, if the current coupling direction is set to L> N, the L and N terminals at the CDN output shown in the figure above must be short-circuited using a wire.

5.2 Determining Whether the EUT Has Passed the Test

Level	Evaluation Criteria	Passed or Failed	Typical Symptoms
Grade A (Criterion A)	Performance is completely normal within the specified limits, with no abnormalities whatsoever.	Usually deemed to have passed	No downtime, resets, display glitches, or data loss; key parameters are within acceptable limits.
Grade B (Criterion B)	Temporary loss or reduction in function or performance, but recovery occurs automatically once the disturbance ceases, without requiring operator intervention	Must be arranged in advance; generally acceptable	Automatically resumes after a brief communication interruption; returns to normal after the screen flickers; returns to normal after a brief deviation from parameters
Class C (Criterion C)	Temporary loss or reduction in function or performance that requires manual intervention to restore (e.g., restart, reset)	Must be arranged in advance; acceptable in certain situations	If the equipment freezes, it must be manually restarted; if the program crashes, it must be reloaded; if parameters are abnormal, they must be adjusted manually.
Grade D (Criterion D)	Irrecoverable loss of functionality or reduced performance due to hardware/software damage or data loss	Determined to be a failure	Components burned out, circuit boards damaged, stored data permanently lost, core functions irrecoverable

6. Post-Test Procedures

6.1 Test Stopped

If the EUT is visibly damaged during the test, immediately tap “Stop Test” on the touchscreen and tap “EUT Power” to turn off the EUT’s power.

If no anomalies occur during the test, wait for the surge test to complete automatically, then click “EUT Power” to turn off the EUT’s power.

Wait 5 minutes to ensure that the high-voltage capacitors inside the unit have fully discharged before proceeding with the next steps.

Turn off the circuit breaker for the built-in network CDN located on the back of the host.

Then replace the EUT for testing, or turn off the power to the host and the Isolation Transformer.

6.2 Post-Test Cleanup and Tidying Up

Verify whether the EUT has passed the test (no performance degradation, no damage).

Clean the test area and wipe it down with a dry cloth; do not use alcohol or corrosive cleaning agents.

Surge testing is a destructive test; it does not automatically generate a test report, but the device automatically saves the test data. Go to “System Information,” click “Test Log,” and export the corresponding test data to a USB flash drive via the USB port. The exported file is in TXT text document format.

Figure 23

6.3 Equipment Storage

6.3.1 Short-Term Storage Requirements

If the equipment is used on a daily basis, no further action is required after cleaning is completed following each test.

6.3.2 Long-Term Storage Requirements

If the device will not be used for an extended period (more than one month), please disconnect all cables and cover the device with a dust cover to prevent dust buildup.

The device should be powered on once a month for just half an hour to prevent the aging of electrical components (such as capacitors and contactors).

7. Use an external device to verify the surge output

7.1 Using an External Oscilloscope (Using a LISUN OSP Series Oscilloscope as an Example)

7.1.1 Using the CRO Port

7.1.1.1 Viewing Surge Voltage Waveforms

Set the Surge Generator to the following parameters: Set the surge voltage to +1 kV, set the coupling direction to L to N, set the interval time as short as possible (e.g., 5 seconds), and set the number of surges to a higher value to facilitate viewing each waveform. Do not connect any EUT; ensure the circuit is completely open. Then, use the coaxial cable provided to connect the “CRO-V” port of the lightning surge generator to the oscilloscope.

Figure 24

Press the ① “Menu” button below ② “Trigger.”

Figure 25

① Select the connected channel, ② set the trigger mode to “Normal,” ③ click to proceed to the next page.

Figure 26

① Select the rising edge.

Figure 27

Press the CH1 knob (①).

Figure 28

① Select a multiplier of 1X; ② Turn off the current test function.

Figure 29

The SG61000-5 series surge generator has a built-in 1000:1 Voltage Probe at the CRO interface. If the surge voltage is set to +1 kV, the actual voltage applied to the oscilloscope is 1 V. Turn the ① CH1 knob to set the ② vertical axis of the oscilloscope to 1/5 per division, or 200 mV, which makes it easier to view the entire waveform. Turn the ③ “Scale” knob to set the ④ horizontal time axis of the oscilloscope to 10 μs per division.

Figure 30

Turn the two knobs—① left and right, and ② up and down—to adjust the waveform display position to the appropriate location shown in the figure. Turn the ③ “Trigger” knob to adjust the level to approximately the middle position.

Figure 31

When applying a lightning surge to the touchscreen, do not click “EUT Power”; instead, click “Start” directly. Each time a surge is output, the oscilloscope will capture a surge voltage waveform as shown in the figure below. Use the horizontal cursor to verify the surge output voltage. Since the Surge Generator is set to 1 kV, the oscilloscope should display 1 V.

Figure 32

Use the vertical cursor to confirm the surge half-width time.

Figure 33

Set the time scale to 1 μs, leaving all other settings unchanged. Wait for the next surge output, then use the vertical cursor to determine the rise time of the surge.

Figure 34

7.1.1.2 Viewing the Surge Current Waveform

Keep the Surge Generator settings unchanged. ① Switch the coaxial cable to the “CRO-I” interface to prepare to monitor the surge current waveform. ② Short-circuit the CDN output terminals L and N to ensure a complete short-circuit condition.

Figure 35

The impedance between L and N in differential mode is 2 Ω, so the vertical scale on the oscilloscope is set to 1/2/5 = 100 mV. The horizontal scale is set to 5 μs. The other settings are the same as when viewing voltage waveforms. The output surge is measured using the same method. The oscilloscope displays the following waveform.

Note: Here, the current is measured using a method designed to measure voltage; the actual current is 1000 V / 1000 / 2 Ω = 500 mA, which corresponds to the 500 mV shown in the figure below.

Figure 36

View half-width.

Figure 37

Check the release date.

Figure 38

7.1.2 Using the CDN Output Port

The built-in digital oscilloscope and CRO port are both designed to help users view waveforms. However, if you need to calibrate the device, you must provide your own high-voltage probe and connect the oscilloscope directly to the CDN output port on the front panel of the surge generator. Refer to Section 7.1.1 and the ratio of the high-voltage probe you are using for instructions on how to operate the oscilloscope.

7.2 Using a Discharge Tube

A discharge tube can be used to easily verify whether a device produces a surge.

Connect the discharge tube as the EUT to the Surge Generator—for example, connect it to the L and N terminals of the built-in CDN output. Set the surge voltage to 4 kV. Do not click to turn on the “EUT Power”; instead, click “Start” directly to begin the surge test. The discharge tube will flash the moment the surge is applied; please dim the lights in the room to facilitate observation. See the figure below:

Figure 38.1

This confirms that the device is indeed producing an output surge. If the discharge tube does not flash, please contact customer service.

8. Troubleshooting and Resolving Common Problems

8.1 The device won’t turn on

Symptom: After turning on the power switch, the device does not respond (the indicator light does not come on, and the fan does not spin).

Possible causes: ① The power cord is not properly connected or is damaged; ② Abnormal supply voltage; ③ A blown fuse; ④ A burned-out varistor (MOV).

Troubleshooting: Ensure the power cord is intact and securely connected. Power supply issues—such as unstable voltage, excessively high voltage, or harmonic interference—can cause fuses and varistors to blow. We recommend using a regulated, clean sine-wave AC power supply to power the device. Replace the fuse or varistor with one of the same type.

The figure below shows the fuse location:

Figure 39

The figure below shows the location of the MOV (metal oxide varistor) inside the filtered power supply:

Figure 40

8.2 Circuit Breaker Tripping in the Laboratory

Symptom: The laboratory ground-fault circuit interrupter trips when a surge is output.

Possible cause: The Isolation Transformer is not connected.

Procedure: Connect the Isolation Transformer as described in Section 3.1. Surge testing generates large instantaneous pulse currents; if an Isolation Transformer is not connected, it may cause the laboratory’s ground-fault circuit interrupter to trip.

8.3 Automatic Device Restart

Symptom: The device automatically restarts when a surge occurs.

Possible cause: The ground wire is not connected properly.

Solution: Refer to Section 3.1. Connect the PGND grounding terminal on the back of the host to ground, and ensure that the grounding resistance is ≤4Ω; otherwise, high voltage may not be safely dissipated, causing the device to automatically restart.

8.4 Surge Phase Angle Test Failed

Symptom: The synchronous phase angle was set, but the surge test was not performed according to the corresponding phase angle.

Possible cause: The EUT power supply is not turned on.

Procedure: The EUT must be powered by an AC source, and it must be turned on during testing so that the surge generator can detect the EUT’s power waveform and perform the surge test according to the set phase angle.

8.5 The waveform contains interference.

Symptom: When using the built-in digital oscilloscope or the CRO port to inspect a standard surge waveform, some noise becomes visible when the waveform is magnified. See the figure below:

Figure 41

Figure 42

Possible cause: The built-in digital oscilloscope and CRO port are provided solely for user convenience, allowing quick and easy access to waveform data; however, they may generate a small amount of noise.

Procedure: If you need to obtain the actual output waveform of the surge generator or wish to calibrate the device, use an oscilloscope and a high-voltage probe to directly inspect the waveform at the CDN output terminal, as shown in the figure below:

Figure 43

Figure 44